Liquid cooler



Aug. 8, 1933. AH. E. CROSBY LIQUID COOLER Filed oct. 2o, 1930 P54? am A TTOP/VEJ/.S

lllllllll l -IQIQUID oooLER l Hai-ry E. yCrosby,"Huntington Park, Calif., as-

signor to Mission Dry Corporation, Ltd., Los Angeles, Calif., a Corporationof Delaware Application October 20, 1930. Serial No. 489,993

f 1 Claim. '(Cl. 62--7-141) This invention relates to an improved refrigerator unit, and has for one of its principal objects the provision of means for use in refrigeration, which meansshall be more efficient than the ordinary units now in use, particularly so .far as actual exposure of cooling surface is concerned.

One of the important objects of this invention I' is to provide in a refrigerator vunit or the like lOl means for adding additional working surface for contact with the material to 'be cooled without v to any 'noticeableI extent.

Another and still further important object of the invention is to provide in a refrigerator unit.

or the like means for an additional reservoir space whereby an extra amount of refrigerant is available at all times,.and further whereby a reserve is created for automatic use inthe eventv of any special emergency.

Other and further important objects of the invention will be apparent from the disclosures in the accompanying vdrawing and following specication.

The invention, in a preferred form, is illustratedin the drawing and hereinafter more fully described.

In the drawing:

Figure 1 is a side elevation of the refrigerator unit of this invention, parts being broken away to show interior construction.

Figure 2 is a partial sectional view taken on the line 2 2 of Figure 1, looking in the direction indicated by the arrows.

Figure 3 is an end view of the improved unit.

As shown in thev drawing:

The reference numeral l() indicates generally a metal cylinderor the like which constitutes the expansion chamber for the improved refrigerator unity of this invention, this cylinder'being adapted to contain a liquefied gas 12 which is maintained in liquid form under pressure as in the usual device, the liquid entering the chamber through an inlet pipe la controlled by a valve 16 operated by 'means of a float or the like 18. The glas in the upper part of the chamber is drawn off through an outlet pipe or the like 20.

One of the important novel features of this invention resides inthe provision of extra contact surface for the refrigerating rchamber by.

extending from this chamber smaller communieating chambers as illustrated at 22, and which comprises pipes or cylinders either made integral with or mounted in the cylinder,V preferably at Athe bottom thereof, in a gas-tight manner.'v

These communicating chambers r.or hollow finimproved Y gers project fromthe wall of the main chamber,

and may be of any desired size and dimensions,v the chief purpose being, of course, to provide a maximum Contact surface, and in the usual practiceare from one-third to one-half the height of the main chamber `and extend downwardly from the bottom wall thereof. The positioning of -these chambers could, of course, be radial or at other angles, and they also could extend from the sides-,or top of the chamber, although in practice ithas been found that the degree of .cold obtained is slightly greater in the bottom position. The form of the communicating chambers could also be varied, as instead of a plurality of extensions could be used.

The unit itself is shown as adapted for cooling a liquidlin a container 30, this being shown as circular in cross-section as best indicated in Figure 2, and with a dome-liketop and bottom 34 .and 36 respectively. An inlet for water or some other liquid to be cooled is shown at 38, and an outlet at 46, and it will be evident that the type of container for the liquid maybe Varied as desired, and that further'other substances than liquids may be cooled,.such as air or the like.

In operation the liquefied gasfeeds into the chamber Yl() through the pipe 14 and past the.

inletvalve 16, theintake being controlled by the float valve 18. The liquid fillsy the extensions 22 and also the main chamber 10 to about one-third of its height, and as the liquid gasies and .the

level falls, the valve opens and permitsan added supply to enter. This operation, of course, is usual in such constructions, the gasied refrigerant being drawn off throughthe pipe 20, 'or an and further, these extensions will always contain a considerable reserve amount of the refrigerant.

Obviously, if the extensions are positioned at the top or higher sides of the vcylinder 10, they will be filled with rgas instead of liquid, but the cooling action will takeplace in much the same manner, and anextra cooling surface for. an ordinary sized unit will bev provided.

I am aware that many changes rmay be made and numerous details of construction varied throughout a wide range withoutdeparting from the principles of this invention, and I, therefore, do not VVpurpose limiting the patentA granted herevsurface for the liquid or substance to be cooled,`r

v on otherwise than as necessitated'by the prior cylinder 'and extending into the liquid to loel cooled for providing additional contacting cooling surface said extensions provided with closed ends, together with a liquid inlet pipe and a gas outlet pipe for the cylinder, and a float valve control for the inlet pipe.

HARRY E. CROSBY. 

